
\makeatletter 
\def\s@btitle{\relax} 
\def\subtitle#1{\gdef\s@btitle{#1}} 
\def\@maketitle{% 
  \newpage 
  \null 
  \vskip 2em% 
  \begin{center}% 
  \let \footnote \thanks 
    {\LARGE \@title \par}% 
                \if\s@btitle\relax 
                \else\typeout{[subtitle]}% 
                        \vskip .5pc 
                        \begin{large}% 
                                \textsl{\s@btitle}% 
                                \par 
                        \end{large}% 
                \fi 
    \vskip 1.5em% 
    {\large 
      \lineskip .5em% 
      \begin{tabular}[t]{c}% 
        \@author 
      \end{tabular}\par}% 
    \vskip 1em% 
    {\large \@date}% 
  \end{center}% 
  \par 
  \vskip 1.5em} 
\makeatother 
